High Pressure Hydraulic Gear Pump 02ZAG06C034D Replacement

The 01Z, 02Z, and 03Z series external high-pressure hydraulic gear pumps manufactured by LIC Hydraulic (encompassing high-demand engineering codes like 02ZAG06C034D, 02ZAG11A143D, and 02ZAG17C035D) are precision rotary fluid power components configured to deliver continuous high-pressure supply for industrial mini power packs, mobile handling plant assemblies, and automation networks. Geometrically matching identical mounting pilot configurations, standard shaft interfaces (including European tapered profiles or straight splines), port sizing definitions, and torque-flow output curves, this product line offers 100% drop-in interchangeability with prominent global industrial high-pressure gear pump layouts.

To address the common industry problem of severe volumetric drop-offs caused by internal oil cross-bypassing at elevated pressures, LIC integrates an autonomous hydrostatically-balanced axial gap compensation floating bush architecture. Every unit across the 02Z series undergoes 100% full-load simulated high-pressure operational factory testing before shipment. Sustaining a high volumetric efficiency above 93% at a continuous 25 MPa profile, our pumps deliver uniform pressure flow and exceptional shock resistance, presenting an ideal B2B alternative for system developers and international distributors.

Technical Specifications

Accurate, catalog-verified technical parameters for the 01Z / 02Z / 03Z series configurations:

Model: 02ZAG06C034D (High-Pressure Micro Gear Pump)

• Product Series: 02Z Heavy-Duty Industrial Gear Pump Platform

• Nominal Displacement: 6.0 cm³/rev

• Continuous Operating Pressure Limit: 25 MPa (250 bar / 3625 psi)

• Intermittent Peak Operating Pressure: 28 MPa (280 bar / 4060 psi)

• Maximum Continuous Rotational Speed: 3500 rpm

• Minimum Allowable Operating Speed: 600 rpm

• Mounting Flange & Shaft Code (AG/C/D): Standard European/International 2-bolt flange configuration, matching optimized tapered/splined shafts with standard flange or threaded port pathways

• Rotation Trajectory: Clockwise (CW, viewed directly from the input drive shaft end)

Model: 02ZAG11A143D (Mid-Range High-Pressure Gear Pump)

• Product Series: 02Z Heavy-Duty Industrial Gear Pump Platform

• Nominal Displacement: 11.0 cm³/rev

• Continuous Operating Pressure Limit: 25 MPa (250 bar / 3625 psi)

• Intermittent Peak Operating Pressure: 28 MPa (280 bar / 4060 psi)

• Maximum Continuous Rotational Speed: 3000 rpm

• Minimum Allowable Operating Speed: 500 rpm

Model: 02ZAG17C035D (Large-Capacity High-Pressure Gear Pump)

• Product Series: 02Z Heavy-Duty Industrial Gear Pump Platform

• Nominal Displacement: 17.0 cm³/rev

• Continuous Operating Pressure Limit: 20 MPa (200 bar / 2900 psi)

• Intermittent Peak Operating Pressure: 24 MPa (240 bar / 3480 psi)

• Maximum Continuous Rotational Speed: 2500 rpm

Key Technical Advantages

• Hydrostatically Balanced Floating Bushings for Zero Internal Leakage: The internal gears are flanked by floating bearing bushes processed from high-grade structural aluminum alloy. Driven by pilot lubrication pressure vectors behind the plates, these bushes automatically float and maintain micro-clearance contact with the gear faces. This self-compensating layout completely seals off lateral fluid bypass under full continuous 25 MPa pressures, maintaining a steady volumetric efficiency over 93%.

• High-Load DU Composite Bearings & Extruded Aluminum Alloy Housing: The outer pump body is machined from premium high-tensile extruded aluminum stock that manages case deflection stresses under continuous peak loading. The internals are supported by premium DU composite sleeve bearings that possess exceptional load carrying capacity and high anti-dry-friction performance, relying on dedicated internal lubrication pathways to lower shaft temperature.

• Micro-Finished Monoblock Gear-Shaft Assembly: The master and slave gear components are forged from high-purity alloy structural steel stock, subjected to precision gear hobbing, case-hardening, and ultra-precise tooth flank grinding. The resulting micrometer-level tooth profile geometry ensures seamless mesh interaction at high speed, dropping flow pulsation waves and mechanical noise levels.

• Dual High-Pressure FKM Shaft Seal Architecture: The input shaft extension is guarded by dual specialized Viton (FKM) high-pressure dynamic seals. Backed by an internal case relief lubrication channel that funnels internal bypass pressure away from the front seal face, this configuration safely manages transient return pressure spikes, ensuring oil-tight performance in dusty industrial plants.

Application Areas

The 01Z, 02Z, and 03Z series high-pressure gear pumps are engineered to act as reliable, space-saving fluid power sources across core global B2B sectors:

• Industrial Mini Hydraulic Power Units (HPUs): Providing power for automotive scissor lifts, truck tailgate lifts, electric warehouse stackers, and micro-press stations.

• CNC Machine Tool Auxiliaries: Powering main hydraulic fixture clamping manifolds, rapid automatic tool-changer actuators, and spindle lubrication networks.

• Modern Agricultural & Material Handling Machinery: Operating cutterbar lift systems on small harvesters, mobile orchard picking platforms, and aerial work platform level-correcting circuits.

• Specialized Municipal & Environmental Fleet Equipment: Powering garbage compactor slide-and-tilt mechanisms and automated broom-rotation loops on street sweepers.

Expert Maintenance Tips

• Mandatory Fluid Pre-Filling & Manual Shaft Priming: Internal tolerances within high-pressure gear pumps are extremely tight. Before firing up a newly installed unit (such as 02ZAG06C034D), fill the internal gear chamber with clean hydraulic oil through the inlet port and manually rotate the input shaft several times. Operating dry will score the internal aluminum floating bushes within the first few seconds, causing catastrophic pump failure.

• Eliminate Suction Ingress to Avoid Cavitation Burnout: External gear pumps are highly susceptible to vacuum cavitation damage. Ensure the inlet suction line is completely airtight and clean the suction strainer frequently. High suction resistance releases dissolved air into bubbles that collapse violently when transitioning to the high-pressure zone, creating microscopic pitting that destroys the aluminum casing walls.

• Enforce Rigorous Fluid Contamination Metrics: Hard micro-particles traversing the gear mesh will scribe deep micro-grooves into the aluminum floating bushings and gear faces, leading to permanent volumetric slippage. Enforce fluid properties calibrated to ISO 4406 19/16/13 or better, and implement high-beta magnetic filtration in the return line to capture fine ferrous dust before it recirculates.